This is not an official rules list from any specific commission or sanctioning body. There IS no such list, containing all aspects. They all can enforce whatever rules they want, and they don't publish a lot of specifics, specifically (IMO) so they can justify the never-end stream of BS decisions.
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Even this list is woefully incomplete:

1: A partially-blocked Punch should not be scored"

What does that mean? Define "partially." Either it's blocked or it isn't.

If it's blocked by your opponent's glove only, does it count? If that glove was touching his face, does it count then? Does that count as much as a direct hit?

If you hit his body, but he turns with the punch, thus minimizing the impact, does that count?

How about hitting an arm?

2: "Punches behind the head are illegal."

- OK, where does the back of the head start? Thompson hit Price on the back-half of his ear. That's legal?

How about on the body - at what point is it too far back?

Suppose you hit your opponent on the back of the head because he turned away after you started to throw?
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I could go on & on.

I am at risk of oversimplifying here, but this is how I see it:

You've pointed out some inconsistencies with an imperfect, subjective scoring system. The questions you ask are totally legit, but the answers are (for the most part) subjective and are simply judgement calls for the ref or the judges scoring the fight. This subjectivity is precisely why there are more than one judge scoring a pro boxing match. Not everyone is going to agree on everything, and that's (mostly) ok.